DevTools Hub - Free Online Developer Tools

Developer Tools Collection

Essential tools for developers, programmers, and webmasters. All tools work directly in your browser with no server-side processing.

Formatters

Format and beautify code for better readability and debugging.

JSON Formatter

Format, validate, minify, and beautify JSON with syntax highlighting and error detection.

HTML Formatter

Format, prettify, and beautify HTML code with proper indentation and validation.

SQL Formatter

Format, beautify, and prettify SQL queries with proper indentation and keyword capitalization.

Encoders & Decoders

Encode and decode data for safe transmission and storage.

Base64 Encoder

Encode and decode Base64 strings. Supports standard and URL-safe variants.

URL Encoder

Encode and decode URLs for safe transmission. Handles special characters.

Generators

Generate hashes, identifiers, and expressions for development tasks.

QR Code Generator

Create QR codes for URLs, text, WiFi, email, SMS, vCards. Download as PNG.

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Password Generator

Generate strong passwords with NIST compliance checking and entropy analysis.

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Hash Generator

Generate MD5, SHA-1, SHA-256, and SHA-512 checksums instantly.

UUID Generator

Generate UUID v1, v4, and v7 identifiers. Bulk generation supported.

Cron Generator

Create and validate cron expressions. See next execution times.

Converters

Convert between different formats and representations.

Timestamp Converter

Convert between Unix timestamps and human-readable dates. Shows current time.

Color Picker

Convert between HEX, RGB, and HSL color formats with live preview.

Word Counter

Count words, characters, sentences with readability scores and keyword density analysis.

Network Tools

Network and IP lookup utilities for developers.

IP Address Lookup

Find your public IP, geolocation, ISP info. Verify VPN and check network settings.

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Code Testing

Test and decode tokens, patterns, and expressions.

Regex Tester

Test regular expressions with real-time matching and capture group display.

JWT Decoder

Decode and verify JSON Web Tokens. Inspect claims, validate format.

Why DevTools Hub?

Privacy First

All processing happens in your browser. No data is sent to any server. Your code never leaves your device.

Always Free

No signup, no limits, no premium tier. Every tool is completely free forever.